I just received my order from JLCPCB, this time I ordered solder paste stencil. 

It's the first time I use stencil, and I have to say it's a game changing! So much quicker and cleaner than with the iron!

I'm missing some component for the ESP+power board, so I still have to wait a bit to validate the design. 

Here is a video of my very first hot gun soldering process